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Leon, WV Tap Water Quality 2026

Water quality report for Leon, WV — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Leon's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Mason Co Psd-Letart PWSID: WV3302713 Updated: 2026 Q2
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1 violation currently open

Lead is 4.50 ppb, 30% of the action level. PFAS has never been sampled at this system.

D

Leon earns a D for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 4.50 ppb — 30% of the federal action level
PFAS never sampled at this system
3 violations since 2015, 1 health-based
1 violation currently open
Leon's lead level vs. all West Virginia community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 4.50 ppb — 30% of the federal action level
✓ Lower lead than 7% of West Virginia utilities
Population Served
117
~1388 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
1
1 open of 3 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
30% of EPA action level
4.50 ppb
Action level: 15 ppb
The 90th-percentile lead result is 4.50 ppb, 30% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Groundwater Rule TREATMENT TECHNIQUE — — 2026 Unaddressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Unaddressed
Consumer Confidence Rule OTHER — — 2019 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

1 violation remains open, out of 3 recorded since 2015 (1 health-based).

About the Main Water System

Utility Mason Co Psd-Letart
PWSID WV3302713
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 117
Service connections 1,388
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Leon tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open. Lead is 4.50 ppb, 30% of the action level.
Does Leon water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Leon? ▼
Mason Co Psd-Letart (PWSID WV3302713). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-04-02. Inspectors recorded 3 significant deficiencies.

What Should Leon Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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